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a 75 kg astronaut is floating in deep space 2.0 m from a 6.0 kg chunk...

a 75 kg astronaut is floating in deep space 2.0 m from a 6.0 kg chunk of rock. a) find the magnitude of gravitational force of the astronaut pulling on the rock. b) find the magnitude of the gravitational force of the rock pulling on the astronaut. justify your answer.

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